Hi, hopefully this is in the right spot. I'm in Coldharbor and have started the quest "Truth, Lies and Prisoners" and I'm at the stage where I was told to go to captain arakh's camp. I can't seem to get up to the upper levels no matter what I do. I went to the nearest wayshrine and went back but can't get anywhere near it, I'm stuck in this little lake area and can't find passage up. The one passage I THINK goes up is greyed out and inaccessible. Is there a way up I don't know about?
Any help would be appreciated.

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@GratuitousViolets